Suhrau was born on 25 April 1898 in Memel, East Prussia (present-day Klaipėda, Lithuania).
[1] He stood as a candidate in the 1925 Memel Territory Landtag election, occupying the sixth place on the MAP list.
[2] Ahead of the 1935 Landtag election, MAP had joined the Memel Unity List (MEL).
[1] Following the re-integration of the Memel Territory into Germany, Suhrau became a member of the local National Socialist German Workers Party (NSDAP) organization.
During the period of 1940 and 1944, he worked in the city administration and served as the caretaker of the Youth Music School of Memel.